From 097701348f402549208af34ec5b6e3186d06e1b9 Mon Sep 17 00:00:00 2001
From: raiyyan <f20241312@pilani.bits-pilani.ac.in>
Date: Thu, 4 Dec 2025 03:36:09 +0530
Subject: [PATCH] feat: Expose media file size and filename length constants

---
 CONTRIBUTORS               |  1 +
 proto/anki/media.proto     |  7 +++++++
 rslib/src/media/service.rs | 17 +++++++++++++++--
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 2ec25da2d..8d1088a3e 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -255,6 +255,7 @@ Ranjit Odedra <ranjitodedra.dev@gmail.com>
 Eltaurus <https://github.com/Eltaurus-Lt>
 jariji
 Francisco Esteva <fr.esteva@duocuc.cl>
+Raiyyan <f20241312@pilani.bits-pilani.ac.in>
 
 ********************
 
diff --git a/proto/anki/media.proto b/proto/anki/media.proto
index 76d42931a..e8ae05474 100644
--- a/proto/anki/media.proto
+++ b/proto/anki/media.proto
@@ -18,6 +18,7 @@ service MediaService {
   rpc RestoreTrash(generic.Empty) returns (generic.Empty);
   rpc ExtractStaticMediaFiles(notetypes.NotetypeId)
       returns (generic.StringList);
+  rpc GetMediaConstants(generic.Empty) returns (MediaConstants);
 }
 
 // Implicitly includes any of the above methods that are not listed in the
@@ -40,3 +41,9 @@ message AddMediaFileRequest {
   string desired_name = 1;
   bytes data = 2;
 }
+
+message MediaConstants {
+  int64 max_individual_media_file_size = 1;
+  int64 max_media_filename_length = 2;
+  int64 max_media_filename_length_server = 3;
+}
diff --git a/rslib/src/media/service.rs b/rslib/src/media/service.rs
index b2ec99d1d..bd6b4a2ac 100644
--- a/rslib/src/media/service.rs
+++ b/rslib/src/media/service.rs
@@ -1,10 +1,12 @@
-use std::collections::HashSet;
-
 // Copyright: Ankitects Pty Ltd and contributors
 // License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+
+use std::collections::HashSet;
+
 use anki_proto::generic;
 use anki_proto::media::AddMediaFileRequest;
 use anki_proto::media::CheckMediaResponse;
+use anki_proto::media::MediaConstants;
 use anki_proto::media::TrashMediaFilesRequest;
 
 use crate::collection::Collection;
@@ -12,6 +14,9 @@ use crate::error;
 use crate::error::OrNotFound;
 use crate::notes::service::to_i64s;
 use crate::notetype::NotetypeId;
+use crate::sync::media::MAX_INDIVIDUAL_MEDIA_FILE_SIZE;
+use crate::sync::media::MAX_MEDIA_FILENAME_LENGTH;
+use crate::sync::media::MAX_MEDIA_FILENAME_LENGTH_SERVER;
 
 impl crate::services::MediaService for Collection {
     fn check_media(&mut self) -> error::Result<CheckMediaResponse> {
@@ -66,4 +71,12 @@ impl crate::services::MediaService for Collection {
 
         Ok(files.into_iter().collect::<Vec<_>>().into())
     }
+
+    fn get_media_constants(&mut self) -> error::Result<MediaConstants> {
+        Ok(MediaConstants {
+            max_individual_media_file_size: MAX_INDIVIDUAL_MEDIA_FILE_SIZE as i64,
+            max_media_filename_length: MAX_MEDIA_FILENAME_LENGTH as i64,
+            max_media_filename_length_server: MAX_MEDIA_FILENAME_LENGTH_SERVER as i64,
+        })
+    }
 }